He is a big star on "The Apprentice," but what about Donald Trumpís real-life apprentices?

Friday night on "20/20," Trumpís children from his marriage to former model, Ivana Trump, speak out. Twenty-six-year-old real estate mini-mogul Donald Jr., and students, Ivanka, 22, and Eric, 19, talk to Barbara Walters about growing up a Trump.

NBC just renewed Trumpís hit show for a second season. And after a corporate re-shuffling on Thursday night's episode, Kristi got the boot from the boardroom. And she told "Extra" that Trumpís decision shocked her.

She says, "I might have offered a little more of a fight, but that's how I run my business. I had no doubt Amorosa was leaving that night, but I was wrong."